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IMC-20D7S Pharmacokinetics (PK): Maximum Concentration (Cmax)
Time frame: Cycles 1 and 3: Prior to, immediately after, and 0.5, 1, 2, 4, 8, 24, 48 (Cycle 3 only), 96, 168, 240, and 336 hours (h) post first infusion. Cycles 2 and 4: Prior to and 1 h post first infusion.
A non-validated assay was used to determine individual serum concentrations of IMC-20D7S. Thus, analyses of PK data were not conducted.
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IMC-20D7S PK: Minimal Concentration (Cmin)
Time frame: Cycles 1 and 3: Prior to, immediately after, and 0.5, 1, 2, 4, 8, 24, 48 (Cycle 3 only), 96, 168, 240, and 336 h post first infusion. Cycles 2 and 4: Prior to and 1 h post first infusion.
A non-validated assay was used to determine individual serum concentrations of IMC-20D7S. Thus, analyses of PK data were not conducted.
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IMC-20D7S PK: Half-life (t½)
Time frame: Cycles 1 and 3: Prior to, immediately after, and 0.5, 1, 2, 4, 8, 24, 48 (Cycle 3 only), 96, 168, 240, and 336 h post first infusion. Cycles 2 and 4: Prior to and 1 h post first infusion.
A non-validated assay was used to determine individual serum concentrations of IMC-20D7S. Thus, analyses of PK data were not conducted.
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IMC-20D7S PK: Clearance (Cl)
Time frame: Cycles 1 and 3: Prior to, immediately after, and 0.5, 1, 2, 4, 8, 24, 48 (Cycle 3 only), 96, 168, 240, and 336 h post first infusion. Cycles 2 and 4: Prior to and 1 h post first infusion.
A non-validated assay was used to determine individual serum concentrations of IMC-20D7S. Thus, analyses of PK data were not conducted.
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IMC-20D7S PK: Area Under the Concentration Versus Time Curve (AUC)
Time frame: Cycles 1 and 3: Prior to, immediately after, and 0.5, 1, 2, 4, 8, 24, 48 (Cycle 3 only), 96, 168, 240, and 336 h post first infusion. Cycles 2 and 4: Prior to and 1 h post first infusion.
A non-validated assay was used to determine individual serum concentrations of IMC-20D7S. Thus, analyses of PK data were not conducted.
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IMC-20D7S PK: Volume of Distribution (Vd) at Steady State
Time frame: Cycles 1 and 3: Prior to, immediately after, and 0.5, 1, 2, 4, 8, 24, 48 (Cycle 3 only), 96, 168, 240, and 336 h post first infusion. Cycles 2 and 4: Prior to and 1 h post first infusion.
A non-validated assay was used to determine individual serum concentrations of IMC-20D7S. Thus, analyses of PK data were not conducted.
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Number of Participants Who Develop Antibodies Against IMC-20D7S (Immunogenicity)
Time frame: Prior to the first and second infusion in each cycle up to Cycle 7 (4- and 6-week cycles)
Planned analyses for immunogenicity were not completed. A decision was made not to develop a validated immunogenicity assay because of the exploratory nature of the study and the analyses.
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Progression-Free Survival (PFS)
Time frame: First dose to disease progression or death (up to 27 weeks)
PFS was determined for participants who went beyond their first disease assessment and completed at least 1 treatment beyond Week 1 of treatment Cycle 3.
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Recommend Doses for Phase 2/3 Studies Based on MTD
Time frame: Baseline to toxicity [up to end of Cycle 1 (4-or 6-week cycles)]
It was decided for administrative reasons to discontinue dosing at the provisional MTD rather than progress to Phase 1b.